class_docstr: A column object, with only the methods and properties required by the
  interchange protocol defined.
  A column can contain one or more chunks. Each chunk can contain up to three
  buffers - a data buffer, a mask buffer (depending on null representation),
  and an offsets buffer (if variable-size binary; e.g., variable-length
  strings).
  Note: this Column object can only be produced by ``__dataframe__``, so
        doesn't need its own version or ``__column__`` protocol.
docstr: Store specific metadata of the column.
docstr_tok: ["Store","specific","metadata","of","the","column","."]
code: def metadata(self) -> dict[str, pd.Index]:
      """
      Store specific metadata of the column.
      """
      return {"pandas.index": self._col.index}
  
imports: from __future__ import annotations
  from typing import Any
  import numpy
  from pandas._libs.lib import infer_dtype
  from pandas._libs.tslibs import iNaT
  from pandas.errors import NoBufferPresent
  from pandas.util._decorators import cache_readonly
  from pandas.core.dtypes.dtypes import ArrowDtype, DatetimeTZDtype
  import pandas
  from pandas.api.types import is_string_dtype
  from pandas.core.interchange.buffer import PandasBuffer
  from pandas.core.interchange.dataframe_protocol import Column, ColumnBuffers, ColumnNullType, DtypeKind
  from pandas.core.interchange.utils import ArrowCTypes, Endianness, dtype_to_arrow_c_fmt
label_desc: Use image node_id 9 for calling the PandasColumn obj's underlying member method code with example usage: obj.metadata() and returns: dict